CTQM Theory Colloquium
Trapped-Ion Simulation of Closed and Open Quantum Systems
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Laser cooled trapped ions offer unprecedented control over both internal and external degrees of freedom at the single-particle level. They are considered among the foremost candidates for realizing quantum simulation and computation platforms that can outperform classical computers in specific tasks.
TBA
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A loophole in the proofs of quantum triviality and asymptotic freedom
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Abstrace: Back in 1973, Sidney Coleman and Nobel Prize winner David Gross proved that only non-abelian gauge theories can have asymptotic freedom.
Johnson noise thermometry using ohmic and hydrodynamic electrons
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Abstract: Current through a resistor exhibits temperature-dependent white noise fluctuations called Johnson-Nyquist noise. For a 2D electron system, measuring the magnitude of these fluctuations provides a direct measurement of the electron temperature, and thereby enables a novel method for inferring specific heat and thermal conductivity. Here I present three general theoretical results about Johnson noise thermometry in both the ohmic and hydrodynamic limits.
What is a gapped (fracton) phase of matter?
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Abstract: Over the past 15 years, there has been a remarkable amount of progress understanding ga
Programmable adiabatic demagnetization for systems with trivial and topological excitations
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Abstract: The ability to prepare ground states of many-body Hamiltonians on quantum devices is of central importance for a variety of tasks and applications in quantum computation and quantum simulation.
Measurement and the quantum non-equilibrium frontier
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Abstract: Measurement has a two-fold role in quantum mechanics: it allows us to learn features of a quantum system, but can also shape its state through wavefunction collapse.